How to increase frequency from 50hz to 1Khz or more?

I want to make RLC resonant circuit, but aI need increase the frequency to make the inductive reactance bigger!, and the q=XL/R, must be 10 0 100 times greater, to see the voltage in L or C and R. its only for learning.
I want to bearboard a RLC, but the problem is that I have 12 volts, 50HZ frequency. So the Inductance should be a bigger one.
The problem : I dont have a frequency generator, AND the inductor from the electronics shop is 1mh maximun. So the reactive inductance is XL= 2*pi*50*.001=0,314159... OHMS.
A friend told me build a circuit with a LM741 operational to increase the frequency but i dont know what to read or bibliography to look.
THANKS AGAIN